This type of case involves a UFO
hovering over water. The witness describes a column of fog, mist, haze or water
ascending from the surface of the water, up to the craft. The terminology
generally used in the description of the observation is “sucking up water”.
This column, I believe, is caused by the rotation of a field in a vertical
plane that encompasses the UFO. This is best visualized by going back to
physics 101, and by inserting a bar magnet vertically into the center of the
UFO, sprinkling iron filings on it, and observing the magnetic lines of force
going up from the top (North Pole) arcing to the sides and down, and then going
back up through the bottom (South Pole – see figure 1). As this field rotates
it causes a fiction on the abutting atmosphere, causing an updraft at the
bottom. This, and what in most cases is seen as a horizontal rotation of one
part of the UFO, causes a swirling vortex to be formed below the UFO. This can
be equated to a vortex similar to a person rotating a finger through still
waters in a pot of water at a rapid rate – eventually causing a maelstrom to
occur.

My paper “Physical Influences of a UFO
on Water” explains this process in more detail and can be read at: http://www.waterufo.net/PIufoW.php
. It is based, in part, on he cases listed below.

Waterspout:
1. A moving, whirling column of spray and mist, with
masses of water in the lower parts, accumulated because of a tornado at sea or
on other large bodies of water.